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AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS54318

現行

2.95V 至 6V 輸入、3A 同步降壓 SWIFT™ 轉換器

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產品規格表

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TPS62813-Q1 現行 具有固定 Fsw 和 SYNC 並採用 2 mm x 3 mm 可潤濕側翼封裝的車用 2.75V 至 6V、3A 降壓轉換器 Smaller solution size and high accuracy.

TPS54318

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 2.95 Vin (max) (V) 6 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2000 Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 4.5 Iq (typ) (µA) 350 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 2.95 Vin (max) (V) 6 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2000 Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 4.5 Iq (typ) (µA) 350 Duty cycle (max) (%) 98
WQFN (RTE) 16 9 mm² 3 x 3
  • Two, 30-mΩ (typical) MOSFETs for High-Efficiency at 3-A loads
  • Switching Frequency: 200 kHz to 2 MHz
  • Voltage Reference Over Temperature: 0.8 V ± 1%
  • Synchronizes to External Clock
  • Adjustable Soft Start/Sequencing
  • UV and OV Power-Good Output
  • Low Operating and Shutdown Quiescent Current
  • Safe Start-Up into Prebiased Output
  • Cycle-by-Cycle Current Limit, Thermal and Frequency Foldback Protection
  • Operating Junction Temperature Range: –40°C to 150°C
  • Thermally Enhanced 3 mm × 3 mm 16-pin WQFN Package
  • Create a Custom Design Using the TPS54318 With the WEBENCH® Power Designer
  • Two, 30-mΩ (typical) MOSFETs for High-Efficiency at 3-A loads
  • Switching Frequency: 200 kHz to 2 MHz
  • Voltage Reference Over Temperature: 0.8 V ± 1%
  • Synchronizes to External Clock
  • Adjustable Soft Start/Sequencing
  • UV and OV Power-Good Output
  • Low Operating and Shutdown Quiescent Current
  • Safe Start-Up into Prebiased Output
  • Cycle-by-Cycle Current Limit, Thermal and Frequency Foldback Protection
  • Operating Junction Temperature Range: –40°C to 150°C
  • Thermally Enhanced 3 mm × 3 mm 16-pin WQFN Package
  • Create a Custom Design Using the TPS54318 With the WEBENCH® Power Designer

TheTPS54318 device is a full-featured, 6-V, 3-A, synchronous, step-down current-mode converter with two integrated MOSFETs.

The TPS54318 device enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the device footprint with a small, 3 mm x 3 mm, thermally enhanced, QFN package.

The TPS54318 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over temperature.

Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-µA typical supply current. Using the EN pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

Undervoltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the soft-start pin. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency foldback and thermal shutdown protects the device during an overcurrent condition.

For more SWIFT™ documentation, see the TI website at www.ti.com/swift.

TheTPS54318 device is a full-featured, 6-V, 3-A, synchronous, step-down current-mode converter with two integrated MOSFETs.

The TPS54318 device enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the device footprint with a small, 3 mm x 3 mm, thermally enhanced, QFN package.

The TPS54318 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over temperature.

Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-µA typical supply current. Using the EN pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

Undervoltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the soft-start pin. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency foldback and thermal shutdown protects the device during an overcurrent condition.

For more SWIFT™ documentation, see the TI website at www.ti.com/swift.

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類型 標題 日期
* Data sheet TPS54318 2.95-V to 6-V Input, 3-A Output, 2-MHz, Synchronous Step-Down SWIFT™ Converter datasheet (Rev. C) PDF | HTML 2018年 4月 6日
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024年 3月 25日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
Application note Calculating Efficiency (Rev. A) 2020年 3月 6日
Selection guide SWIFT DC/DC Converters Selector Guide (Rev. G) 2019年 2月 6日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Application note Understanding Thermal Dissipation and Design of a Heatsink 2011年 5月 4日
Application note Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A) 2010年 9月 15日
User guide TPS54318EVM-512 3-A, SWIFT Regulator Evaluation Module 2009年 9月 23日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

模擬型號

TPS54318 TINA-TI Transient Reference Design

SLVM651.TSC (172 KB) - TINA-TI Reference Design
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模擬型號

TPS54318 TINA-TI Transient Spice Model

SLVM652.ZIP (63 KB) - TINA-TI Spice Model
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模擬型號

TPS54318 Unencrypted PSpice Average Model Package (Rev. A)

SLVM897A.ZIP (36 KB) - PSpice Model
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模擬型號

TPS54318 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM640A.ZIP (54 KB) - PSpice Model
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計算工具

TPS54620DESIGN-CALC — TPS54620 and TPS54XXX Current-Mode Step-Down Converter Design Calculator

The Design Calculator Plus Application Note (SLVA352A) Calculator Tool calculates the critical external component values for the TPS54620/TPS54622/TPS54521/TPS54320/TPS54618/TPS54418/TPS54318/TPS54218/TPS54319. The calculator includes power stage design, feature design and Type II and Type III (...)
支援產品和硬體

支援產品和硬體

產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
TPS54218 — 2.95V 至 6V 輸入、2A 同步降壓 SWIFT™ 轉換器 TPS54318 — 2.95V 至 6V 輸入、3A 同步降壓 SWIFT™ 轉換器 TPS54319 — 採用 3 mm x 3 mm QFN 封裝的 2.95 V 至 6 V 輸入、3 A、2 MHz SWIFT™ 同步降壓轉換器 TPS54320 — 4.5V 至 17V 輸入、3A 同步降壓式 SWIFT™ 轉換器 TPS54418 — 2.95V 至 6V 輸入、4A 同步降壓 SWIFT™ 轉換器 TPS54521 — 17V 輸入、5A 同步降壓轉換器 TPS54618 — 2.95V 至 6V 輸入、6A 同步降壓 SWIFT™ 轉換器 TPS54620 — 4.5-V 至 17-V、6-A 同步 SWIFT™ 降壓轉換器 TPS54622 — 具 hiccup 電流限制的 4.5V 至 17-V、6-A 同步 SWIFT™ 降壓轉換器 TPS54821 — 具 Hiccup 電流限制的 4.5V 至 17V、8A 同步降壓轉換器 TPS56921 — 具 VID 控制的 4.5-V 至 17-V、9-A 同步降壓轉換器
硬體開發
開發板
TPS54418EVM-375 — TPS54418 3.3V 輸入、1.8V 輸出、4A SWIFT™ 評估模組 TPS54620EVM-374 — TPS54620、8V 至 17V、6A SWIFT™ 轉換器評估模組
軟體
計算工具
TPS54620DESIGN-CALC — TPS54620 & TPS54XXX 電流型降壓轉換器設計導入計算機
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配置圖

High Performance, Cost Effective, TPS54318 Solution for Cyclone IV: 3.3 and 5-V

SLTR012.PDF (50 KB)
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配置圖

Power Distribution for Altera Arria II GX, Option 2

SLTR028.PDF (38 KB)
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參考設計

TIDA-01021 — 適用於 DSO、雷達和 5G 無線測試儀的多通道 JESD204B 15 GHz 時鐘參考設計

High speed multi-channel applications require precise clocking solutions capable of managing channel-to-channel skew in order to achieve optimal system SNR, SFDR, and ENOB. This reference design is capable of supporting two high speed channels on separate boards by utilizing TI’s LMX2594 (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01023 — 適用於雷達和 5G 無線測試器的高通道計數 JESD204B 時鐘產生參考設計

High-speed multi-channel applications require low noise and scalable clocking solutions capable of precise channel-to-channel skew adjustment to achieve optimal system SNR, SFDR, and ENOB. This reference design supports high channel count JESD204B synchronized clocks using one master and multiple (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01024 — 適用於雷達和 5G 無線測試器的高通道計數 JESD204B 菊輪鍊時鐘參考設計

High-speed multi-channel applications require low noise and scalable clocking solutions capable of precise channel-to-channel skew adjustment to achieve optimal system SNR, SFDR, and ENOB. This reference design supports scaling up JESD204B synchronized clocks in daisy chain configuration. This (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-010131 — 適用於雷達和無線 5G 測試儀的多通道射頻收發器計時參考設計

Analog front end for high-speed end equipments like phased-array radars, wireless communication testers, and electronic warfare require synchronized, multipletransceiver signal chains. Each transceiver signal chain includes high-speed, analog-to-digital converters (ADCs), digital-to-analog (...)
Design guide: PDF
電路圖: PDF
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WQFN (RTE) 16 Ultra Librarian
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